DBPapers
DOI: 10.5593/SGEM2014/B42/S19.078

THE INFLUENCE OF THE LOCAL CLIMATE CHANGES ON THE AIR QUALITY IN THE AREA OF THE HYDRIC RECLAMATION -THE LAKE MOST

J.Brejcha, M. Vagnerova
Wednesday 1 October 2014 by Libadmin2014

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-16-2 / ISSN 1314-2704, June 19-25, 2014, Book 4 ,Vol. 2, 591-598 pp

ABSTRACT
Brown coal open pit mines in the North Bohemia region are slowly approaching their
boarders and they are going step by step to the end of their operation. Planned and even already realized reclamation procedure in the region is based on the formation of
artificial lakes. The nature of the surface cover in the studied area has changed from
mining landscapes without vegetation to the water area with “green” surroundings after
the hydrological reclamation of the residual pit of the quarry Most – Ležáky. The local
climate is significantly influenced within the warm part of the year, when the
temperature of the water in the Lake is higher than the air temperature. The period of
daily temporarily degraded local dispersion conditions is extended under certain
meteorological conditions and thus the time for the possible dilution of cumulated
pollutants is shorter. The evaluation of the fresh air pollution development in the
foothills of the “Krušné hory” Mountain during the gradual filling of the Lake in the
years 2008 to 2013 proved an anomalous increase in the number of the day with the
exceeded limit of the 24-hour average of the PM10 concentration of aerosol particles on the stations in the vicinity of Lake Most in the comparison with the other stations in the region. This situation was typical for the spring and summer months of the years 2010 to 2013. The similar phenomenon was not detected within the years 2008 and 2009, when only a small part of the Lake was filled. The subject of the current research is the classification of the real dispersion conditions in the context with the meteorological situation in the area and the selection of such situations in which a significant influence on the local air pollution can be expected thanks to the microclimate change. The model evaluation will be done for such selected situations to evaluate their spatial extent and the significance of this influence.

Keywords: hydric reclamation, Most Lake, air quality PM10 , local climatic effect